Glycine soja seed extract is derived from whole soybean seeds and contains a broad mix of phytochemicals beyond isolated isoflavones, including saponins, phytosterols, peptides, and polyphenolic antioxidants.
Its antioxidant activity comes from this combination of phenolic and flavonoid compounds capable of scavenging reactive oxygen species, and some soy derived protease inhibitors found in the extract have shown effects on reducing pigment transfer to skin cells, distinct from the estrogen pathway mechanism specific to isolated isoflavones.
Because glycine soja seed extract is not chemically standardized across brands, antioxidant and phenolic content varies meaningfully with extraction method and sourcing, so study results do not necessarily generalize across every commercial version labeled this way.
Glycine Soja Seed Extract References
Dermatological and cosmeceutical benefits of Glycine max (soybean) and its active components, International Journal of Cosmetic Science, 2015
Safety Assessment of Soy Derived Ingredients as Used in Cosmetics, International Journal of Toxicology, 2024
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